lpstat

Display status information about the current classes, jobs, and printers. More information: https://keith.github.io/xcode-man-pages/lpstat.1.html.

Show a long listing of printers, classes, and jobs:

lpstat -l

Force encryption when connecting to the CUPS server:

lpstat -E

Show the ranking of print jobs:

lpstat -R

Show whether or not the CUPS server is running:

lpstat -r

Show all status information:

lpstat -t